There was something about London being attacked that struck me today. One is reminded of the Blitz, of course. No, it's not the same in scale but there surely is a similar principle at work.

Let's be clear about one thing -- as Red Ken (the mayor of London, Ken Livingstone) himself said: this was an attack not against prime ministers and presidents but against working class people, blacks and whites, Muslims and Christians, Jews and Hindus. People going about their daily lives.

There can be no more excuses. There are no possible reasons for attacking innocent people, many of whom were probably against the Iraq war.

This shows the reality of Islamist jihadism, pure and simple. It is indiscriminate and murderous and is not a campaign of the oppressed against the powerful. It is a campaign of the murderous against the innocent and, when the bombs in buses go off, against the powerless.

London is a modern, multicultural, tolerant and progressive city. Any attack upon it comes surely from the most reactionary faction of the darkest forces at work in the world. London is the city where Karl Marx studied, Oscar Wilde wrote and Churchill spoke. In the last hundred years it has been attacked by Hitler and, today, by the forces of Bin Ladenism. Let there be no excuses about the "causes" of such atrocities. The choice is clear. It's London or Bin Laden.